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SE7714136L - BORRKRONA - Google Patents

BORRKRONA

Info

Publication number
SE7714136L
SE7714136L SE7714136A SE7714136A SE7714136L SE 7714136 L SE7714136 L SE 7714136L SE 7714136 A SE7714136 A SE 7714136A SE 7714136 A SE7714136 A SE 7714136A SE 7714136 L SE7714136 L SE 7714136L
Authority
SE
Sweden
Prior art keywords
inserts
serrulations
rock bit
slot
mechanically
Prior art date
Application number
SE7714136A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
D C Dick
Original Assignee
Gen Electric Canada
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gen Electric Canada filed Critical Gen Electric Canada
Publication of SE7714136L publication Critical patent/SE7714136L/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/58—Chisel-type inserts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
    • Y10T407/1908—Face or end mill
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

In a percussive rock bit or similar tool wherein cemented carbide cutting inserts are retained in open radial slots in the head of the tool, an improved method of mechanically retaining the inserts. The inserts are provided with a plurality of elongated radially aligned serrulations along each flank thereof, the thickness of the insert as measured between the crests of opposing serrulations being such as to provide a substantial interference with the slot wall. The inserts may be cold fitted by sliding along the slot, following which body material is peened so as to overlay a small chamfer at the base of the outwardly facing wall of the inserts. The inwardly facing walls of the inserts may be inclined so as to retain the center plug of the rock bit mechanically.
SE7714136A 1977-06-10 1977-12-13 BORRKRONA SE7714136L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA280,272A CA1093066A (en) 1977-06-10 1977-06-10 Percussion rock bit

Publications (1)

Publication Number Publication Date
SE7714136L true SE7714136L (en) 1978-12-11

Family

ID=4108864

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7714136A SE7714136L (en) 1977-06-10 1977-12-13 BORRKRONA

Country Status (8)

Country Link
US (1) US4265325A (en)
AU (1) AU519051B2 (en)
BR (1) BR7803721A (en)
CA (1) CA1093066A (en)
GB (1) GB1576976A (en)
IE (1) IE46239B1 (en)
SE (1) SE7714136L (en)
ZA (1) ZA78272B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519064A1 (en) * 1981-12-24 1983-07-01 Stenuick Freres BUTTON IN HARD MATERIAL FOR PERFORATION TOOL AND TOOL COMPRISING SUCH A BUTTON
US4545711A (en) * 1982-03-09 1985-10-08 The Babcock & Wilcox Company Tool using replaceable bits
DE4406513A1 (en) * 1994-02-28 1995-08-31 Plica Werkzeugfabrik Ag Carbide plate and rock drill equipped with it

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2025308A (en) * 1934-01-03 1935-12-24 Joseph M Redinger Rotary cutter
GB520088A (en) * 1938-10-12 1940-04-15 Eidco Inc Improvements in or relating to rock drilling equipment
US2309410A (en) * 1941-03-04 1943-01-26 Frank P Miller Inserted blade cutter
GB643790A (en) * 1947-10-27 1950-09-27 Rip Bits Ltd Improvements in or relating to drill-bits or drill-steels having hard metal tips suitable for rock drilling
US2502128A (en) * 1948-04-30 1950-03-28 Joy Mfg Co Rock drill bit
US2614812A (en) * 1949-06-25 1952-10-21 Ingersoll Rand Co Rock drilling tool
US2614813A (en) * 1949-07-08 1952-10-21 Ingersoll Rand Co Rock drilling tool
GB858513A (en) * 1957-05-30 1961-01-11 Murex Ltd Improvements in or relating to cutting tools
US3563325A (en) * 1968-09-16 1971-02-16 Kennametal Inc Percussion bit
SU468994A1 (en) * 1974-02-15 1975-04-30 Институт горного дела Cylindrical carbide insert for drilling tools

Also Published As

Publication number Publication date
ZA78272B (en) 1978-12-27
IE780009L (en) 1978-12-10
AU3638178A (en) 1979-11-29
IE46239B1 (en) 1983-04-06
CA1093066A (en) 1981-01-06
BR7803721A (en) 1979-01-16
US4265325A (en) 1981-05-05
AU519051B2 (en) 1981-11-05
GB1576976A (en) 1980-10-15

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